Since version 4.0 of Audaciones Japanese characters are not shown, as you can see in the screenshot they are left blank.
The track name is "未来 麓" and the album name "閃 輝 虫"
At first I thought it was an Audacious bug when they made the switch to Qt, but the same thing happened to me in VLC as well, so I guess it's a Qt bug.
I'm using the latest version of Qt in the repositories and I use Manjaro Xfce.
Sorry for my bad English.